Chess Clock Digital Chess Timer with Audible Alarm Function YS 902 Black English Version gray.Feature: 1. ABS Shell: Chess clock is made of high durability ABS shell, it is environmentally friendly, portable and convenient to carry. 2. Audible Alarm: Chess timer also has an audible alarm that can be easily turned on or off for the game. 3. Operation Upgrade: Reduce complexity to simplicity, simplified setup steps, easier to use, hand will use. 4. Multifunction Game Chess Clock: Chess clock digit